Steam-escape valve for range-boilers, &amp;c.



W. A. COLLVER.

STEAM ESCAPE VALVE FOR RANGE BOILERS, 6w. APPLICATION FILED FEB. a, 1918.

1,401,048. V Patented,Dec. 20, 1921.

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STEAM-ESCAPE vnnv s son sands-BOILERS, 8w.

Specification of Letters Patent. P ,1't@ 1.i5i3, 1 B 39, 20, 19,21

AppIicatiorifiled February 5,1918. Serial No. 216,054.

To all whom it may concern:

Be itknownthat 1, WILLIAM A. CoLLvnn, a citizen of the United States, residing at Marshfield, in the county of Coos andState of Oregon, have invented certain new and useful improvements in Ste'anr- Escape Valves -for Range-Boilers, &c.; and I do hereby declare the'following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to steam escape valves for range boilers, etc.

The object of the present invention is to provide a simple, practical and efiicient steam escape designed for use in connection with range boilers and the like and capable of permitting the escape of steam accumulating in the top of the boiler and at the same time of preventing water from passing out through the steam escape.

With these and other objects in view, the invention consists in the construction and novel combination of parts hereinafter fully changes in the form, proportion, size and drawing and pointed out in the claim hereto appended; it being understood that various changes in the form, proportion, size and minor details of construction, Within the scope of the claim, may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawing:

Figure 1 is aside elevation of a steam escape valve constructed in accordance with this invention and shown applied to a range boiler.

Fig. 2 is an enlarged vertical sectional view or" the steam escape valve.

Fig. 3 is a horizontal sectional view of the same on the line 33 of Fig. 2.

Like numerals of reference designate corresponding parts in all the figures of the drawing.

In the accompanying drawing, in which is illustrated the preferred embodiment of the invention, the steam escape valve comprises in its construction a valve casing composed of an upper valve chamber 1 and a lower float chamber 2 which is connected at the upper end withthe lower end of the valve chamber. The valve chamber, which may be conveniently formed by a T-coupling, is provided at the upper end with a valve seat 3, preferably carried by a steam escape pipe or steam outlet d which is threaded into the said T-coupling. The'T-coupling is pref erably arranged with its opposite arms disposed'vertically, one of the opposite arms'being connected to the steam outlet or escape pipe i, and the other to the upper end of the float chamber 2. The third arm'of the T- coupling is disposed horizonta ly and is connected to one end of a steam inlet pipe by threading the latter into the same as shown at 5. The steam inlet or steam pipe 6, which is connected with the upper end of a range boiler 7, has a coupling 8 and a union 9 and it permits steam which generates on the top of the range boiler to pass therefrom into the valve chamber 1. The steam pipe 6 may be of any other desired construction and the valve chamber is located above the plane of the top of the boiler and it receives a valve member or valve proper 10 operating in the valve chamber and carried by the upper end of the vertical stem or rod 11 which is secured at its lower end to a float 12. The float 12 is located within the float chamber 2 which is composed of acylindrical body and upper and lower caps or sections 13 and 14: threaded on the ends of the body portion but it may be secured to the same in any other desired manner as will be readily understood. The valve stem or rod 11 passes through a central opening 15 in a horizontal guide or spacer 16 consisting of a disk secured within the upper end of the vertical body portion of the float chamber and provided with a plurality of openings 17 for the passage of water and steam. The upper cap 13 is provided with a neck 18 which is threaded into the coupling which constitutes the valve chamber, and the lower section 14 is also provided with a neck 19 which receives the threaded upper end 20 of a pipe 21 piercing the side of the boiler and extending into the same and adapted to permit the water to recede from the float chamber. 22 and 23 designate the cold and hot water pipes extending to and leading from the of the steam will cause the valve to close and prevent any escape of thewater.

What is claimed is: l

In combination With a boiler, a' valvefa chamber therefor, a conduit for steam leadboiler, said valve normally closing theisteam escape pipe, said valve having a float in the said cylinder, said chamber and cylinder be ing in communicating relation substantially unobstructed to eifective expansion of steam therein, said construction permitting the accumulation of steam in the chamber to displace Water in the cylinder so that the valve ill thus automatically recede to permit escape of excess steamthrough the escape pipe and subsequently move against its seat through rising of the Water level in the boiler and cylinder. 7

In testimony whereof I affix my signature in presence of two WltIlGSSQS; 7

WILLIAM A. COLLVER.

Witnesses ELLEN B. RUDNAs,

W. B. Cox. 

